Krak des Chevaliers

Before the Crusades began, there was a Muslim castle here, built in 1031 for the Emir of Aleppo.

An excerpt from the article 17 facts about Krak des Chevaliers

It was a watchtower occupied by the Kurdish military colony, Hosn Al Akrad, i.e. the Kurdish stronghold. It was probably an insignificant fort at that time, guarding an important route.